One of the real beneficiaries of Charlie Crist's fall from grace has been Rep. Kendrick Meek (D-Fla.). And now that Marco Rubio is getting beat up too, the door is open even more for the Democrat.

A new Research 2000 poll for the liberal website Daily Kos shows Rubio leading Meek 41-40 in a head-to-head matchup. And with Rubio ahead 58-30 in the primary, that appears to be the most likely general election matchup.

Rubio is unknown to 35 percent of voters, while Meek is unknown to 57 percent of voters, yet both men have approval ratings between 25 and 30 percent. Once Meek becomes better known (he is raising good money), who's to say he won't show a lead in the general?

Meek is also right in the race if Crist were to run as an indepenent, with Rubio at 32, Crist at 29 and Meek at 27.

Watch out for Meek's upside.